a Record control number 000252237601142

a ISSN 1090-3038

a Original cataloging agency NEU GrandLibrary

a Language code of text/sound track or separate title eng

a Classification number TK5101

b Item number .C68 2007

a Personal name Serener, Ali,

h Medium Electronic Document

a Title Optimized LDPC codes for OFDM and spread OFDM in correlated channels.

c Statement of responsibility, etc Ali Serener, Balasubramaniam Natarajan, Don M. Gruenbacher.

b Name of publisher, distributor, etc IEEE,

c Date of publication, distribution, etc 2007.

a Place of publication, distribution, etc New York :

a Summary, etc This paper analyzes optimized short block length low-density parity-check (LDPC) codes in spread OFDM systems that operate in frequency correlated Rayleigh fading channels. Extended irregular repeat-accumulate (eIRA) codes and codes constructed with progressive edge-growth (PEG) algorithm are optimized using density evolution and differential evolution techniques and any error floors are improved using girth conditioning. It is shown here that error floors in LDPC coded OFDM is lowered by introducing spreading on top of channel coding. It is also demonstrated that by using the distribution of the number of faded bits per OFDM symbol, the similarity in performance between codes in uncorrelated and correlated Rayleigh fading channels can be determined a priori.

a Topical term or geographic name as entry element Near East University Article

a Topical term or geographic name as entry element Yakın Doğu Üniversitesi Makale

a Topical term or geographic name as entry element Telecommunications

a Topical term or geographic name as entry element Parity-Check Codes

a Topical term or geographic name as entry element Design

g Relationship information 2007, p2276-2280

x International Standard Serial Number 10903038

t Title 2007 IEEE 65th Vehicular Technology Conference, Vols 1-6

u Uniform Resource Identifier http://library.neu.edu.tr:2048/login?url=http://dx.doi.org/10.1109/VETECS.2007.470